[MacPorts] #51801: qt5: support older versions of OS X via different versions of Qt 5

[MacPorts]

#51801: qt5: support older versions of OS X via different versions of Qt 5
--------------------------+---------------------------------
  Reporter:  dliessi      |      Owner:  MarcusCalhoun-Lopez
      Type:  enhancement  |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:  wontfix      |   Keywords:
      Port:  qt5          |
--------------------------+---------------------------------

Comment (by barracuda156):

 Replying to [comment:14 MarcusCalhoun-Lopez]:
 > Although some version of Qt can build on 10.7-10.12 (see changesets in
 this ticket and #52922), I can see no realistic way of adding support for
 10.6.[[BR]]
 > Going back many versions, Qt 5 uses
 [https://developer.apple.com/reference/corefoundation/1542555-cfrunlooptimercreatewithhandler?language=objc
 CFRunLoopTimerCreateWithHandler], which was not introduced until Mac OS X
 10.7.[[BR]]
 > Sorry I can not do more.

 That might be possible via some CFLite library (still needs clang,
 unfortunately) like https://github.com/mlabbe/CoreFoundation

-- 
Ticket URL: <https://trac.macports.org/ticket/51801#comment:17>
MacPorts <https://www.macports.org/>
Ports system for macOS